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Electrical Specifications
Physical Specifications
79
Module Specifications
This appendix lists the specifications for the 1746-INT4
Thermocouple/mV Isolated Input Module.
Attribute
Backplane current consumption
Backplane power consumption
Number of channels
I/O chassis location
A/D conversion method
Input filtering
Normal mode rejection
(between [+] input and [-] input)
Common mode rejection
(between inputs and chassis
ground)
Channel bandwidth (-3 dB)
Calibration
Isolation
Attribute
LED indicators
Module ID code
Recommended cable:
for thermocouple inputs ...
for mV inputs ...
Value
110 mA @ 5V dc
85 mA @ 24V dc
0.6 W max (0.55 W @ 5V dc, 2 W @ 24V dc
4 (backplane and channel-to-channel isolated)
Any I/O module slot except slot 0
Sigma-delta modulation
Analog filter with low pass digital filter
Greater than 50 dB @ 50 Hz
Greater than 60 dB @ 60 Hz
Greater than 120 dB at 50/60 Hz (with 1 kΩ imbalance)
8 Hz
Once yearly, if required
1000V transient or 150V ac continuous
channel-to-channel or channel-to-backplane
Value
5, green status indicators, one for each of 4 channels
and one for module status
3515
Shielded twisted pair thermocouple extension wire
Alpha 5121 or equivalent
Publication 1746-UM614B-EN-P - September 2007
A
Appendix
(1)
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